Which musical term is used to indicate a texture of a single unaccompanied melodic line?

Which musical term is used to indicate a texture of a single unaccompanied melodic line?

Which musical term is used to indicate a fast tempo?

Which circled letter is indicating the treble clef?  

Audio example ?VxJw3wfC56=1748012981&Kq3cZcYS15=8b73988c51f7418794add232722274a2&Kq3cZcYS15=8b73988c51f7418794add232722274a2&VxJw3wfC56=1748012981&3cCnGYSz89=KRDGSSmzcAkbwKMrxTJEbOLy8a0yTIooHgx%2FImrf6Bg%3D#5 is which piece from the list of musical selections below?

Audio example ?VxJw3wfC56=1748012981&Kq3cZcYS15=8b73988c51f7418794add232722274a2&Kq3cZcYS15=8b73988c51f7418794add232722274a2&VxJw3wfC56=1748012981&3cCnGYSz89=KRDGSSmzcAkbwKMrxTJEbOLy8a0yTIooHgx%2FImrf6Bg%3D#11 is which term from the list of musical terms below?

What are two general principles that govern functional harmony?

Which musical term indicates a melody played by the full orchestra that alternates with soloists in a common Baroque musical form?

Audio example ?VxJw3wfC56=1748012981&Kq3cZcYS15=8b73988c51f7418794add232722274a2&Kq3cZcYS15=8b73988c51f7418794add232722274a2&VxJw3wfC56=1748012981&3cCnGYSz89=KRDGSSmzcAkbwKMrxTJEbOLy8a0yTIooHgx%2FImrf6Bg%3D#8 is which piece from the list of musical selections below?

Audio example ?VxJw3wfC56=1748012981&Kq3cZcYS15=8b73988c51f7418794add232722274a2&Kq3cZcYS15=8b73988c51f7418794add232722274a2&VxJw3wfC56=1748012981&3cCnGYSz89=KRDGSSmzcAkbwKMrxTJEbOLy8a0yTIooHgx%2FImrf6Bg%3D#10 is which piece from the list of musical selections below?